<template>
  <view class="u-keyboard" @touchmove.stop.prevent="() => {}">
    <view class="u-keyboard-grids">
      <view class="u-keyboard-grids-item" v-for="(group, i) in abc ? EngKeyBoardList : areaList" :key="i">
        <view :hover-stay-time="100" @touchstart="carInputClick(i, j)" hover-class="u-carinput-hover"
              class="u-keyboard-grids-btn"
              v-for="(item, j) in group" :key="j">
          {{ item }}
        </view>
      </view>
      <view @touchstart="backspaceClick" @touchend="clearTimer" :hover-stay-time="100" class="u-keyboard-back"
            hover-class="u-hover-class">
        <u-icon :size="38" name="backspace" :bold="true"></u-icon>
      </view>
      <view :hover-stay-time="100" class="u-keyboard-change" hover-class="u-carinput-hover" @click="changeCarInputMode">
        <text class="zh" :class="[!abc ? 'active' : 'inactive']">中</text>
        /
        <text class="en" :class="[abc ? 'active' : 'inactive']">英</text>
      </view>
    </view>
  </view>
</template>

<script>
export default {
  name: "u-keyboard",
  emits: ["change", "backspace"],
  props: {
    // 是否打乱键盘按键的顺序
    random: {
      type: Boolean,
      default: false
    }
  },
  data() {
    return {
      // 车牌输入时，abc=true为输入车牌号码，bac=false为输入省份中文简称
      abc: false
    };
  },
  computed: {
    areaList() {
      let data = [
        '京',
        '沪',
        '粤',
        '津',
        '冀',
        '豫',
        '云',
        '辽',
        '黑',
        '湘',
        '皖',
        '鲁',
        '苏',
        '浙',
        '赣',
        '鄂',
        '桂',
        '甘',
        '晋',
        '陕',
        '蒙',
        '吉',
        '闽',
        '贵',
        '渝',
        '川',
        '青',
        '琼',
        '宁',
        '挂',
        '藏',
        '港',
        '澳',
        '新',
        '使',
        '学'
      ];
      let tmp = [];
      // 打乱顺序
      if (this.random) data = this.$u.randomArray(data);
      // 切割成二维数组
      tmp[0] = data.slice(0, 10);
      tmp[1] = data.slice(10, 20);
      tmp[2] = data.slice(20, 30);
      tmp[3] = data.slice(30, 36);
      return tmp;
    },
    EngKeyBoardList() {
      let data = [
        1,
        2,
        3,
        4,
        5,
        6,
        7,
        8,
        9,
        0,
        'Q',
        'W',
        'E',
        'R',
        'T',
        'Y',
        'U',
        'I',
        'O',
        'P',
        'A',
        'S',
        'D',
        'F',
        'G',
        'H',
        'J',
        'K',
        'L',
        'Z',
        'X',
        'C',
        'V',
        'B',
        'N',
        'M'
      ];
      let tmp = [];
      if (this.random) data = this.$u.randomArray(data);
      tmp[0] = data.slice(0, 10);
      tmp[1] = data.slice(10, 20);
      tmp[2] = data.slice(20, 30);
      tmp[3] = data.slice(30, 36);
      return tmp;
    }
  },
  methods: {
    // 点击键盘按钮
    carInputClick(i, j) {
      let value = '';
      // 不同模式，获取不同数组的值
      if (this.abc) value = this.EngKeyBoardList[i][j];
      else value = this.areaList[i][j];
      if (!this.abc) this.abc = true;
      this.$emit('change', value);
      if (this.vibrate) uni.vibrateShort();
    },
    // 修改汽车牌键盘的输入模式，中文|英文
    changeCarInputMode() {
      this.abc = !this.abc;
    },
    // 点击退格键
    backspaceClick() {
      this.backspaceFn();
      clearInterval(this.timer); //再次清空定时器，防止重复注册定时器
      this.timer = null;
      this.timer = setInterval(() => {
        this.backspaceFn();
      }, 250);
    },
    backspaceFn() {
      this.$emit('backspace');
    },
    clearTimer() {
      clearInterval(this.timer);
      this.timer = null;
    },
  }
};
</script>

<style lang="scss" scoped>
@import "../../libs/css/style.components.scss";

.u-keyboard-grids {
  background: rgb(215, 215, 217);
  padding: 24 rpx 0;
  position: relative;
}

.u-keyboard-grids-item {
  @include vue-flex;
  align-items: center;
  justify-content: center;
}

.u-keyboard-grids-btn {
  text-decoration: none;
  width: 62 rpx;
  flex: 0 0 64 rpx;
  height: 80 rpx;
  /* #ifndef APP-NVUE */
  display: inline-flex;
  /* #endif */
  font-size: 36 rpx;
  text-align: center;
  line-height: 80 rpx;
  background-color: #fff;
  margin: 8 rpx 5 rpx;
  border-radius: 8 rpx;
  box-shadow: 0 2 rpx 0 rpx #888992;
  font-weight: 500;
  justify-content: center;
}

.u-carinput-hover {
  background-color: rgb(185, 188, 195) !important;
}

.u-keyboard-back {
  position: absolute;
  width: 96 rpx;
  right: 22 rpx;
  bottom: 32 rpx;
  height: 80 rpx;
  background-color: rgb(185, 188, 195);
  @include vue-flex;
  align-items: center;
  border-radius: 8 rpx;
  justify-content: center;
  box-shadow: 0 2 rpx 0 rpx #888992;
}

.u-keyboard-change {
  font-size: 24 rpx;
  box-shadow: 0 2 rpx 0 rpx #888992;
  position: absolute;
  width: 96 rpx;
  left: 22 rpx;
  line-height: 1;
  bottom: 32 rpx;
  height: 80 rpx;
  background-color: #ffffff;
  @include vue-flex;
  align-items: center;
  border-radius: 8 rpx;
  justify-content: center;
}

.u-keyboard-change .inactive.zh {
  transform: scale(0.85) translateY(-10rpx);
}

.u-keyboard-change .inactive.en {
  transform: scale(0.85) translateY(10 rpx);
}

.u-keyboard-change .active {
  color: rgb(237, 112, 64);
  font-size: 30 rpx;
}

.u-keyboard-change .zh {
  transform: translateY(-10rpx);
}

.u-keyboard-change .en {
  transform: translateY(10 rpx);
}
</style>
